Frank and Joe Hardy investigate rumors of a hairy beast running through the woods of Bayport and attacking people. A close encounter with not one but three creatures makes the boys wonder if the beast is real and if it's multiplying.
Separated from their parents in Beijing, China's Forbidden City, second-grade twins Ethan and Ella luckily find an ancient map that helps them find their way.
With help from their cousin Harry, eight-year-old twins Ella and Ethan discover who is illegally taking coral from the reefs near their aunt and uncle's beach house on the shore of Australia's Coral Sea.
Trevor, Robyn, and Nick find themselves in deep trouble when they decide to investigate the theft of some research into the use of carob beans to treat cancer.
Colette's five friends are excited to see the Eiffel Tower and attend her cousin Julie's runway fashion show when they all spend spring break in Paris, but upon their arrival, Julie's designs are stolen, and the Thea Sisters take the case.
Brothers Frank and Joe Hardy, agents of American Teens Against Crime, are recruited to act as undercover bodyguards for wealthy celebrity Samantha Chilton who has come into possession of a map to a long-sought golden mummy in Egypt--a prize someone is apparently willing to kill for.
Frank and Joe Hardy, agents of the top secret American Teens Against Crime organization, cannot believe their luck when they are sent to a local diamond show and assigned to guard supermodels--who just may be diamond thieves.
